Marriage and bank account

So I been married to my husband for almost two years now. He recently just cheated on me sexting these two girls. We are trying to work this out bc we have a 1 year old son together. It’s very hard to look at him sometimes. Anyways I told him I wanted his bank info. And does not want to give it to me. I just want to see the activity that’s going on bc well it is our money.. am I in the wrong for keep asking for it ?